Some people may not know that bitcoin can be traced to someone if the government wants to trace it. This is not the first time such bad actors are known.
Police catch thieves but the Police can also be the thief and get caught too.
Government can literally find anything and anyone on the planet if they wish to. I do not support crime or breaking the law in any way and that it why if you get caught you have to do the time. Those who are doing the bad stuff with bitcoin now and are not caught will think that they are smart but eventually, nemesis will always catch up with them. And they will pay for it.
Considering that the bitcoin blockchain is immutable and all the records lives there forever. It's definitely true.
It's why using bitcoin for crime is just plain dumb, also the reason why government banning bitcoin to prevent crime is the lamest excuse you'd find like ever. It's just not true at all and bitcoin is transparent that corrupted people will avoid using it.